The toner is not oversized, but for occasional use it fulfill its role.
However, two caveats tarnish widely use this printer. On the one hand, the tonner based on a fragile plastic system (-1 star). On the other hand, the printer emits a burning plastic smell that infects by the throat (-2 rating).
It's been awhile since I had not used a material with such low quality plastics (I had met this at a time on no-name external hard drive enclosures). And I have never felt as unbearable smell with any other laser printer-HP, Samsung, Canon ...
This printer is untenable for me indoors: I print by opening the window or by putting it directly to the outside!
I recommend another entry model, for example Samsung, also at competitive price, more robust and does not smell bad.